package com.foreknow.demo6;

import java.util.ArrayList;
import java.util.List;

/**
 * @author shkstart
 * @create 2021-07-27 15:03
 */
public class Test {
    public void m1(List a){
        a.size();
    }
    public List m2(){
        List a=new ArrayList();
        return a;
    }

    public static void main(String[] args) {
        Test test=new Test();
        List a=new ArrayList();
        test.m1(a);
        List a1=test.m2();
        a1.size();
    }


    public void test1(){

    }

}
